Muffler.



. E. D. LEWIS.

MUFPLER. Y

APPLICATION FILED AUG. 9, 1911. l

1,024,688'. f Patented Apr. 3o, 1912.

UNITED STATES PATENT einen..

EDWARD EUDLEY LEWIS, OF ELMIRA, NEW YORK, ASS-IGNOR TU HEATER-MUFFLEBCO., 0F ELMIBA, NEW' YORK, A.

MUFFLER.

Specification of Application filed August 9,

To all/whom it may concern. M

Be it known that I, EDWARD Donner LEWIS, a citizen of the United States,and resident of Elmira, in the count-y oit (lie mung and'State ot NewYork, have invented certain new and useful Improve* ments in Muiliers,of which the following is a specification.

This invention relates to muiiiers for overcoming the noise produced byengines; that exhaust forcibly into atmosphere, and has for its object adevice o't' the rharaffter nientioned that is simple and cheap inconstruetion, and that is also highly ell'ieient.

The miiiier in question speciality designed for use in connection withgas engines of the explosion type from which the exhaust is expelledwith suoli force that the noise is particularly objectionable.

Referring to tho drawings: Figure l is a central., longitudinal sectionof the inniier on the line l., l ot Fig. 2; and Fig. is a cross-sectionon the line ZMZ of Fig. l.

The inulller comprises a plurality of sinii lar inter-connnunicating,hollow sections connected together, each section consisting, broadlyspeaking, 0f a chamber having inlet and outlet parts that are oppositelylocated in corresponding positions in each section, and containing,Vperforated partitions that cause the gas to take a eiroiiitous coursethrough the mutiler and gradually transforms the pulsations oi thenoisy, eb;- piosive exi :inst to a eontinuous noiseless dis charge.

In the drawings the hollow sections are represented. as eoneaie, andmafie up troni two similar eoiiraye members i, l, iiavii flanged edges2, 2, which are rheaply torinesi by casting or stamping. sections Thesemake a rery ehr-ap moitier for they 'are all made from the samemitm/'mand so are interehangeable, and besides the rounifled, hotlow eininbers Iormefl by them when :iS-l sen'ibleii :j specially well adaptedto serre as expaneion chambers, in wliioh the may lose, the pressureunder which it is di charged it'rom the engine, The fiiifr'toratedpartitions 3 arg, respectively, represented Letters Patent. PatentedApr. 30, 1912.

191i. Serial No. 643,229.

heid between the flanges 2, Z of theseetions, so that they are Securedin place by the flanges when the latter are tasteii'ed together, byrivets or other means, in forming the sections. The perforatedpartitions are also made to serve the purpose. oi' de'- tieetors to turnthe gas as it enters the seetions ontwardiy toward the pertoratione Ll(see Fig. 'through which. it. passes in its course to the next section,and are adapted to that purpose by being' formed with eentrai,pyraniidal projections 5, that extend in the opposite direction te thatin which the gases Henn Thus, the are caused to flow through the mufflerin a eirenitoue course, as indicated by the arrow, iii which -the gas isgiven an opportunity 'to expand. as it enters theseetions successively,and is also repeatedly choked back by the perforated partitions 3 tillfinally it exhausts troni the muilier in a. continuons discharge that isnoiseless. The end eeetions are pro- 'vided with suitable couplingmembers 6.

The sections are eenneeted to each other by metall rings 'Z' that havepliant flanges 8 adapted to ne broughttogetlier so te clamp aiifd retainrigidly between them the edges of both the adjacent seetionsu Timexx itis obvious; thatI the inuliier can be built from a supply of sectionsconsisting of het ion' members ali of which areQoioiie pat; tern,arigitions all alike, and coupling; ringsall the rame with the exceptionet tlioee that serve forend Couplings which have ont lars entendingonttroni them as Shown.

uiiler, the eoin lon of ar si ntoreoinmunieating hollow Sew tions each.'termed of two identical, oppo sitelV-disi'iosed reiitrallypeitoratedeoi'iotivJ members haring tianged engine, the mehr here ot the sectionsbeing; ail inter-change# zihle and earh section. containing a peritirated Central partitioirplate whieli @laminat in piace by the flanges oti mein bers; substantially as shown and dtseriiied.

A moitier having, in combination, a pluraiity oi oppositely-disposedeoneave members with adjoin ng edges, and rings eey of Lf-shapedeross-seeiion embracing and damping said edges together-- 3. A niuiierhaving, in Combination, tivo Oppositely-disposed concave members with 5outw@diy-projecting peripheral Hanges, un inermediae haeqihite with itsperiphery embrace/il between said funges, and a chimp` ,ese

ing-ring of i-shaped eress-seeion embracing the anges und .securing Saidmembers and the bahia-pluie together.

EDVARD DUDLEY LENIS. Vftnesses r M. F. GOODYEAR, H. C. hummm.

